[INFO] updating cached repository shanemikel/rust-hello [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/shanemikel/rust-hello [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/shanemikel/rust-hello" "work/ex/beta-1.38-1/sources/1.37.0/gh/shanemikel/rust-hello"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/shanemikel/rust-hello'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/shanemikel/rust-hello" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] d473b3db08dbfe0ed83f428a13e337b242c04ce5 [INFO] sha for GitHub repo shanemikel/rust-hello: d473b3db08dbfe0ed83f428a13e337b242c04ce5 [INFO] validating manifest of shanemikel/rust-hello on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of shanemikel/rust-hello on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing shanemikel/rust-hello [INFO] finished frobbing shanemikel/rust-hello [INFO] frobbed toml for shanemikel/rust-hello written to work/ex/beta-1.38-1/sources/1.37.0/gh/shanemikel/rust-hello/Cargo.toml [INFO] started frobbing shanemikel/rust-hello [INFO] finished frobbing shanemikel/rust-hello [INFO] frobbed toml for shanemikel/rust-hello written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello/Cargo.toml [INFO] crate shanemikel/rust-hello already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing shanemikel/rust-hello against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] d8da57ec1f245ebbf1e9ce48564cf69d60345dffa732b3d1178ffa3294ca4590 [INFO] running `"docker" "start" "-a" "d8da57ec1f245ebbf1e9ce48564cf69d60345dffa732b3d1178ffa3294ca4590"` [INFO] [stderr] Compiling rust-hello v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Mutex` [INFO] [stderr] --> src/main.rs:9:26 [INFO] [stderr] | [INFO] [stderr] 9 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data` [INFO] [stderr] --> src/main.rs:25:17 [INFO] [stderr] | [INFO] [stderr] 25 | let data = data.read().unwrap(); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_data` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `List` [INFO] [stderr] --> src/list.rs:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | pub enum List { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/list.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | pub fn new() -> List { List::Nil } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `cons` [INFO] [stderr] --> src/list.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn cons(self, x: T) -> List { List::Cons(x, Box::new(self)) } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `head` [INFO] [stderr] --> src/list.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | pub fn head(self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `tail` [INFO] [stderr] --> src/list.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | pub fn tail(&self) -> Option<&List> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `head_ref` [INFO] [stderr] --> src/list.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | pub fn head_ref(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `N` [INFO] [stderr] --> src/main.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | const N: usize = 10; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_list` [INFO] [stderr] --> src/main.rs:39:1 [INFO] [stderr] | [INFO] [stderr] 39 | fn test_list() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.37s [INFO] running `"docker" "inspect" "d8da57ec1f245ebbf1e9ce48564cf69d60345dffa732b3d1178ffa3294ca4590"` [INFO] running `"docker" "rm" "-f" "d8da57ec1f245ebbf1e9ce48564cf69d60345dffa732b3d1178ffa3294ca4590"` [INFO] [stdout] d8da57ec1f245ebbf1e9ce48564cf69d60345dffa732b3d1178ffa3294ca4590 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] c39f2322d6ba609487d788a9e2c9f4cd55f41176c4edb89ee505edfd7ae124c5 [INFO] running `"docker" "start" "-a" "c39f2322d6ba609487d788a9e2c9f4cd55f41176c4edb89ee505edfd7ae124c5"` [INFO] [stderr] Compiling rust-hello v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::cell::RefCell` [INFO] [stderr] --> src/main.rs:8:9 [INFO] [stderr] | [INFO] [stderr] 8 | use std::cell::RefCell; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Mutex` [INFO] [stderr] --> src/main.rs:9:26 [INFO] [stderr] | [INFO] [stderr] 9 | use std::sync::{Arc, Mutex, RwLock}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `data` [INFO] [stderr] --> src/main.rs:25:17 [INFO] [stderr] | [INFO] [stderr] 25 | let data = data.read().unwrap(); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_data` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `List` [INFO] [stderr] --> src/list.rs:3:1 [INFO] [stderr] | [INFO] [stderr] 3 | pub enum List { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/list.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | pub fn new() -> List { List::Nil } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `cons` [INFO] [stderr] --> src/list.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn cons(self, x: T) -> List { List::Cons(x, Box::new(self)) } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `head` [INFO] [stderr] --> src/list.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | pub fn head(self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `tail` [INFO] [stderr] --> src/list.rs:20:5 [INFO] [stderr] | [INFO] [stderr] 20 | pub fn tail(&self) -> Option<&List> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `head_ref` [INFO] [stderr] --> src/list.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | pub fn head_ref(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: constant item is never used: `N` [INFO] [stderr] --> src/main.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | const N: usize = 10; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `test_list` [INFO] [stderr] --> src/main.rs:39:1 [INFO] [stderr] | [INFO] [stderr] 39 | fn test_list() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.65s [INFO] running `"docker" "inspect" "c39f2322d6ba609487d788a9e2c9f4cd55f41176c4edb89ee505edfd7ae124c5"` [INFO] running `"docker" "rm" "-f" "c39f2322d6ba609487d788a9e2c9f4cd55f41176c4edb89ee505edfd7ae124c5"` [INFO] [stdout] c39f2322d6ba609487d788a9e2c9f4cd55f41176c4edb89ee505edfd7ae124c5 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/shanemikel/rust-hello:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 6c853ce3d34de68400cf41919c1454c73b39685b7f5e95b5ee8d58379c425713 [INFO] running `"docker" "start" "-a" "6c853ce3d34de68400cf41919c1454c73b39685b7f5e95b5ee8d58379c425713"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/rust_hello-ed65609bf68006ba [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "6c853ce3d34de68400cf41919c1454c73b39685b7f5e95b5ee8d58379c425713"` [INFO] running `"docker" "rm" "-f" "6c853ce3d34de68400cf41919c1454c73b39685b7f5e95b5ee8d58379c425713"` [INFO] [stdout] 6c853ce3d34de68400cf41919c1454c73b39685b7f5e95b5ee8d58379c425713